This ingenious concept treatment of a Lavazza solo espresso machine by Israeli design student Schmuel Linski gives a double meaning to a "shot of mud."

Here's a round-up of some of favorite uses...
Concrete kitchens, via Apartment Therapy:



This compact concrete sink by Danish designer Heike Meulhaus is the little washbasin that could:

There is something really playful about applying concrete to tables, and in a way, fancying-up the idea of a prefab picnic table.